A school bus painted green and running on biodiesel rolled into town on Saturday night packed with supplies headed to Cuba.

It's part of the 17th annual Caravan to Cuba, a relief effort by Pastors for Peace. The bus is one of several taking different routes through America. They will meet up in McAllen, Texas, and cross the border into Mexico.

From there the donated medical supplies and sports equipment are flown to Cuba. The United States has embargoed Cuban goods since 1962. It officially became law during the Clinton administration.

Since 2003, the United Nations has overwhelmingly voted to end the embargo twice, but the United States has resisted both times.

Organizers say this trip is more than just a relief effort.

"We go as an act of protest against the blockade. We don't agree with our country's foreign policy on Cuba that deprives the Cuban people of food and medicine and also says that we can't legally travel to Cuba. We don't agree with that law. We don't believe our government should be able to tell us where we can and can't travel," Briana Harris of Pastors for Peace said.

The stop in Austin netted 21 bicycles from Bikes Across Borders. The bus also carries ultrasound machines, wheelchairs, crutches, prosthetic limbs, school supplies and Little League equipment.